Reverse cube



FIG. 1 is a bottom perspective view of a reverse cube;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a vertical side elevational view thereof, the other 3 side elevational views being the same. 

CLAIM We claim the ornamental design for a reverse cube, as shown and described. 